breakaway vs fissiparous

breakaway is a noun but fissiparous is not a noun.

Word	Noun	Adjective	Verb	Adverb
breakaway	Yes	Yes	No	No
fissiparous	No	Yes	No	No

As adjectives, breakaway and fissiparous are synonyms defined as:

breakaway and fissiparous: having separated or advocating separation from another entity or policy or attitude

Other synonyms of breakaway include separatist.

breakaway (noun)	fissiparous (noun)
the act of breaking away or withdrawing from

breakaway (adjective)	fissiparous (adjective)
having separated or advocating separation from another entity or policy or attitude	reproducing by fission
	having separated or advocating separation from another entity or policy or attitude